'Everything we could have missed, we missed'

"Everything that we could have missed, we missed". A former French intelligence agent admits they should have caught Mohamed Merah before his Toulouse shooting spree which left seven people dead, including three children. Merah was killed after a bloody stand-off with police. His older brother Abdelkader is in custody facing charges of complicity to murder. But two months on and with no official documentation from authorities, many questions remain unanswered.